Sugar of lead is a term used to describe lead acetate, a white crystalline powder that was once used in various applications such as dyes, pigments, and medicines. Due to its toxicity, lead acetate is no longer used in most countries. Synonyms for sugar of lead include lead sugar, lead diacetate, salt of Saturn, and Goulard's extract. These terms refer to the same chemical compound with slightly different names, depending on their historical usage. Lead diacetate, for example, refers to the two molecules of acetic acid that are combined with lead to create the compound. Similarly, Goulard's extract is named after a French physician who used lead acetate as a topical treatment for skin conditions.